Catalog - Globigerina isahayensis Catalog - Globigerina isahayensis

CATALOG OF ORIGINAL DESCRIPTIONS: Globigerina isahayensis Asano 1962

This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.

Higher levels: pf_cat -> G -> Globigerina -> Globigerina isahayensis
Other pages this level: << < G. inaequispira angusta, G. inaequispira incluta, G. inaequispira testata, G. inaequispira transversa, G. inaequispira universa, G. incisa, G. incompta, G. inconstans, G. increbescens, G. incretacea, G. inflata, G. infracretacea, G. infracretacea gargasiana, G. infracretacea trochoidea, G. intermedia, G. isahayensis, G. jurassica, G. juvenilis, G. kelleri, G. khadumica, G. kochi, G. kondoi, G. konkensis, G. kozlowskii, G. krosniensis, G. kugleri, G. kyushuensis, G. labiacrassata, G. lamellosa, G. linaperta, G. linaperta transdanubica> >>

Globigerina isahayensis

Citation: Globigerina isahayensis Asano 1962
taxonomic rank: Species
Described on page(s) : 55-56
Type specimens: Pl. 21, figs. 9a, b, c,; Holotype:- IGPS coll. cat. no. 77225.
Type sample (& lithostrat): From Enoura formation, correlative with the upper part of the Kyoragi formation;
Type age (chronostrat): Eocene
Type locality: 80 m depth of the boring core at Kamihara, Enoura-mura, Kita-Takaki- gun, Nagasaki Prefecture; Kyushu, Japan
Type repository: IGPS Japan

Current identification/main database link: Catapsydrax unicavus Bolli, Loeblich and Tappan 1957

Original Description

"Test trochospiral, low-spired, perophery rounded: four chambers in last whorl, of which last one is very small and attached on peripheral side; sutures depressed, slightly curved; wall calcareous, finely perforate; aperture at umbilical end of last formed chamber, with a small lip; umbilicus not covered by any bulla.

Maximum diameter of holotype 0.4 mm.

Extra details from original publication
Remarks:- This new species is apparently similar to Catapsydrax unicavus Bolli, Loeblich and Tappan, but is distinguished from it by the much smaller last chamber, instead of a bulla. In this respect, it is somewhat related to Catapsydrax unicavus Blow (not Bolli, Loeblich and Tappan), but differs in the number of chambers of the last whorl.

Occurrence:- From the upper part of the Kyoragi formation to the top of the Sakasegawa group.


Asano, K. (1962). Tertiary Globigerinids from Kyushu, Japan. Science Reports of the Tohoku University. Special Volume 5: 49-65. gs


Globigerina isahayensis compiled by the pforams@mikrotax project team viewed: 17-7-2024

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